Self-control type oil-water separation device

Abstract

The utility model relates to the technical field of oil-water separation, in particular to a self-control type oil-water separation device. In order to solve the problem that an oil-water separator in the prior art needs an operator to manually adjust outlet valves at an oil discharge port and a water discharge port to prevent cross flow of light oil and water, the utility model provides a novel self-controlled oil-water separation device. According to the device, the oil-water separation chamber and the L-shaped pipeline are ingeniously designed to be in a U shape, the oil-water separation chamber, the top of the water overflow buffer tank and the top of the light oil overflow buffer tank are communicated, drainage automation is achieved through the medium density difference, and daily personnel operation, measuring point monitoring and other non-gravity type self-control valves are not added; and unmanned guarding and unmanned operation are realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil water separation technical field, concretely is a kind of self-control type oil water separation device. BACKGROUND

[0002] Oil-water separator is a kind of device for processing mixture containing oil and water, its main function is to separate oil and water, its working principle is mainly based on the density difference of oil and water separation, oil droplet will float to the top of oil-water separation chamber and discharge from the oil outlet of oil-water separation chamber upper portion, water is discharged from the water outlet of oil-water separation chamber lower portion. When using, user needs to pay attention to oil-water separation limit, prevent because the oil-water ratio in oil-water mixture changes, resulting in oil-water separation limit reduces to water outlet, or oil-water separation limit rises to the process accident of oil outlet.

[0003] In the prior art, when the oil-water ratio in the inlet material of oil-water separator, i.e. oil-water mixture, changes, and the oil-water separation limit deviates, operating personnel need to manually adjust the opening degree of outlet valve at oil outlet and water outlet to adjust the outflow of oil and water, so as to ensure that the oil-water separation limit does not deviate, and the labor intensity of operating personnel is high. SUMMARY

[0004] The utility model discloses to solve the problem that the oil-water separator in prior art needs operating personnel to manually adjust the outlet valve at oil outlet and water outlet to prevent the crossflow of light oil and water, and therefore provides a new self-control type oil water separation device to reduce the labor intensity of operating personnel and effectively prevent the crossflow of light oil and water.

[0005] The utility model discloses to solve the problem that the oil-water separator in prior art needs operating personnel to manually adjust the outlet valve at oil outlet and water outlet to prevent the crossflow of light oil and water, and therefore provides a new self-control type oil water separation device to reduce the labor intensity of operating personnel and effectively prevent the crossflow of light oil and water.

[0006] The application discloses an automatic oil-water separation device, which comprises an oil-water separation chamber, a water overflow buffer tank, a light oil overflow buffer tank, a water storage tank and a light oil storage tank. The top of the oil-water separation chamber is provided with a first nitrogen inlet and a first VOC interface. The top of the water overflow buffer tank is provided with a second nitrogen inlet and a second VOC interface. The top of the light oil overflow buffer tank is provided with a third nitrogen inlet and a third VOC interface. The first nitrogen inlet, the second nitrogen inlet and the third nitrogen inlet are communicated with each other and then communicated with a nitrogen pipeline. The first VOC interface, the second VOC interface and the third VOC interface are communicated with each other and then communicated with a VOC pipeline. The lower part of the oil-water separation chamber is provided with a water outlet. The upper part of the oil-water separation chamber is provided with an oil outlet. The middle part of the oil-water separation chamber is provided with an oil-water mixture inlet. The lower part of the water overflow buffer tank is provided with a water overflow inlet and a water self-flow outlet. The oil-water separation chamber is provided with an initial water supplement lower limit which is higher than the water outlet. The water overflow inlet of the water overflow buffer tank is arranged to be higher than the initial water supplement lower limit of the oil-water separation chamber and lower than the oil outlet, and when the light oil level in the oil-water mixture is higher than the water overflow inlet, the oil-water mixture overflows from the oil outlet. The water overflow inlet of the water overflow buffer tank is communicated with the water outlet of the oil-water separation chamber through an L-shaped pipeline. The water amount in the initial water supplement lower limit is equal to the water amount for filling the L-shaped pipeline. The water self-flow outlet of the water overflow buffer tank is communicated with the water storage tank through a self-flow outlet water pipeline. The lower part of the light oil overflow buffer tank is provided with an oil overflow inlet and an oil self-flow outlet. The oil overflow inlet of the light oil overflow buffer tank is communicated with the oil outlet of the oil-water separation chamber through a horizontal pipeline. The oil self-flow outlet of the light oil overflow buffer tank is communicated with the oil storage tank through a self-flow outlet oil pipeline. The pipe diameter of the water self-flow outlet of the water overflow buffer tank and the pipe diameter of the oil self-flow outlet of the light oil overflow buffer tank are both greater than the pipe diameter of the oil-water mixture inlet of the oil-water separation chamber.

[0007] In use, the water level in the oil-water separation chamber is ensured to be not lower than the initial water supply lower limit. Since the first nitrogen inlet, the second nitrogen inlet and the third nitrogen inlet are communicated with the nitrogen pipeline after being communicated with each other, the first VOC interface, the second VOC interface and the third VOC interface are communicated with the VOC pipeline after being communicated with each other, and since the L-shaped pipeline forms a U-shaped communicating vessel with the oil-water separation chamber, when the oil-water mixture is all water and the water level in the oil-water separation chamber slowly reaches a height higher than the water overflow inlet of the water overflow buffer tank, the water starts to overflow. Since the pipe diameter of the water self-flow outlet of the water overflow buffer tank is larger than the pipe diameter of the oil-water mixture inlet of the oil-water separation chamber, the water in the water overflow buffer tank is timely discharged, so that the water surface (oil-water interface) in the oil-water separation chamber does not exceed the height of the water overflow inlet of the water overflow buffer tank, that is, the water cannot be discharged from the oil discharge port of the oil-water separation chamber. When the water content in the oil-water mixture decreases and starts to contain oil, since the water overflow buffer tank is communicated with the top of the oil-water separation chamber, that is, the pressure is equal, the L-shaped pipeline and the oil-water separation chamber together form a U-shaped communicating vessel, and the water discharge port at the lower part of the oil-water separation chamber is the liquid communication point of the U-shaped communicating vessel. With the continuous addition of the oil-water mixture, more oil accumulates until the liquid level reaches the height of the oil discharge port at the upper part of the oil-water separation chamber, and then the oil is discharged from the oil discharge port. When the water content in the oil-water mixture decreases, the overflow discharge amount of the water discharge port of the oil-water separation chamber decreases. The water overflow buffer tank is arranged between the water storage tank and the L-shaped pipeline, so that the oil-water separation chamber, the L-shaped pipeline and the water overflow buffer tank do not form a communicating vessel. When the water in the water overflow buffer tank is discharged to the water storage tank, the negative pressure generated will adsorb the nitrogen at the upper part of the water overflow buffer tank, that is, the siphon effect will not be generated to suck out the water in the L-shaped pipeline, so that the liquid in the oil-water separation chamber will not be endlessly sucked into the water overflow buffer tank, and then the oil will not be sucked into the water storage tank. When the oil-water mixture is all oil, since the water overflow buffer tank is communicated with the top of the oil-water separation chamber, that is, the pressure is equal, according to P = ρgh, ρoil < ρwater, so h 油 is greater than h 水 . With the continuous addition of the oil-water mixture, since the height of the L-shaped pipeline and the height of the oil discharge port of the oil-water separation chamber are fixed, when the oil-water separation chamber continuously discharges oil, the oil discharge port of the oil-water separation chamber continuously overflows and discharges, and the oil-water separation interface in the oil-water separation chamber remains at a stable height. At this time, the oil-water separation interface is the height of the water discharge port at the lower part of the oil-water separation chamber when it is designed, so the water cannot flow out of the water discharge port of the oil-water separation chamber, thereby ensuring the normal separation of oil and water.

[0008] In specific implementation, a self-operated regulating valve is arranged on the nitrogen pipeline, so that a stable pressure is maintained at the upper parts of the oil-water separation chamber, the water overflow buffer tank and the light oil overflow buffer tank.

[0009] In specific implementation, the VOC pipeline is provided with a single call valve, which on one hand needs to move pressure condition for starting, so that the oil-water separation chamber, the water overflow buffer tank and the light oil overflow buffer tank upper part maintain a certain pressure, and on the other hand the single call valve makes the gas medium flow in one direction only and does not produce backflow phenomenon.

[0010] In specific implementation, the VOC pipeline is further provided with a fire damper to prevent backfire.

[0011] In the specific implementation, the first trap valve is arranged on the self-flowing water pipeline to prevent waste caused by nitrogen exhaust.

[0012] In the specific implementation, the second trap valve is arranged on the self-flowing oil pipeline to prevent waste caused by nitrogen exhaust.

[0013] The beneficial effects of the utility model are as follows: compared with the oil-water separator in the prior art, the self-control type oil-water separator ingeniously designs the oil-water separation chamber and the L-shaped pipeline into a U-shaped communicating vessel, and realizes drainage automation by connecting the top of the oil-water separation chamber, the water overflow buffer tank and the light oil overflow buffer tank, and by utilizing the medium density difference, wherein the oil-water separation chamber and the L-shaped pipeline form the U-shaped communicating vessel to ensure that the overflow drainage of the oil-water separator is water medium; the water inlet pipeline of the water storage tank, the L-shaped pipeline and the oil-water separation chamber form a new communicating vessel, because the water storage tank is below, the siphon phenomenon is generated when the oil-water separation chamber drains, the water overflow buffer tank is added, so that when the water amount separated by the oil-water separation chamber is reduced, the drainage of the oil-water separator chamber is ensured to be in the overflow drainage state rather than the siphon drainage state, and the entire oil-water separation process does not add daily personnel operation, measuring point monitoring and other non-gravity type self-control valves, and realizes unattended and unmanned operation. BRIEF DESCRIPTION OF DRAWINGS

[0014] The drawings incorporated into the specification and forming a part thereof show embodiments consistent with the present utility model and together with the specification serve to explain the principles of the present utility model.

[0015] In order to more clearly illustrate the technical scheme in the embodiments of the present utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced as follows, and obviously, other drawings can be obtained by those skilled in the art without creative labor under the premise of not paying the creative labor.

[0016] Figure 1 It is the whole structure schematic diagram of the self-control type oil-water separation device.

[0017] In the figure: 1 - oil-water separation chamber, 2 - water overflow buffer tank, 3 - light oil overflow buffer tank, 4 - water storage tank, 5 - light oil storage tank, 6 - water outlet, 7 - oil outlet, 8 - initial water replenishment lower limit, 9 - L-shaped pipeline, 10 - nitrogen pipeline, 11 - VOC pipeline, 12 - self-regulating valve, 13 - single call valve, 14 - flame arrester, 15 - first trap valve, 16 - second trap valve, 17 - oil-water mixture inlet. DETAILED DESCRIPTION

[0018] In order to enable the above-mentioned purposes, features and advantages of the present application to be more clearly understood, the following will further describe the present application. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0019] In the description, it should be noted that the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. It should be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0020] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein; Obviously, the examples in the specification are only a part of the embodiments of the present application, not all the embodiments.

[0021] The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0022] As Figure 1As shown, a self-control oil-water separation device includes an oil-water separation chamber 1, a water overflow buffer tank 2, a light oil overflow buffer tank 3, a water storage tank 4, a light oil storage tank 5, the top of the oil-water separation chamber 1 is provided with a first nitrogen inlet, a first VOC interface, the top of the water overflow buffer tank 2 is provided with a second nitrogen inlet, a second VOC interface, the top of the light oil overflow buffer tank 3 is provided with a third nitrogen inlet, a third VOC interface, the first nitrogen inlet, the second nitrogen inlet, and the third nitrogen inlet are communicated with each other and then communicated with a nitrogen pipeline 10, the first VOC interface, the second VOC interface, and the third VOC interface are communicated with each other and then communicated with a VOC pipeline 11, the lower part of the oil-water separation chamber 1 is provided with a water outlet 6, the upper part of the oil-water separation chamber 1 is provided with an oil outlet 7, the middle part of the oil-water separation chamber 1 is provided with an oil-water mixture inlet 17, the lower part of the water overflow buffer tank 2 is provided with a water overflow inlet and a water self-flow outlet, the oil-water separation chamber 1 is provided with a lower limit 8 of the initial water replenishment level which is higher than the water outlet 6, the water overflow inlet of the water overflow buffer tank 2 is higher than the lower limit 8 of the initial water replenishment level of the oil-water separation chamber 1 and is lower than the oil outlet 7, and when the light oil level in the oil-water mixture is higher than the water overflow inlet, the oil-water mixture will overflow from the oil outlet 7, the water overflow inlet of the water overflow buffer tank 2 is communicated with the water outlet 6 of the oil-water separation chamber 1 through an L-shaped pipeline 9, the water amount in the lower limit 8 of the initial water replenishment level is equal to the water amount to fill the L-shaped pipeline 9, the water self-flow outlet of the water overflow buffer tank 2 is communicated with the water storage tank 4 through a self-flow outlet water pipeline, the lower part of the light oil overflow buffer tank 3 is provided with an oil overflow inlet and an oil self-flow outlet, the oil overflow inlet of the light oil overflow buffer tank 3 is communicated with the oil outlet 7 of the oil-water separation chamber 1 through a horizontal pipeline, the oil self-flow outlet of the light oil overflow buffer tank 3 is communicated with the oil storage tank through a self-flow outlet oil pipeline, and the pipe diameter of the water self-flow outlet of the water overflow buffer tank 2 and the pipe diameter of the oil self-flow outlet of the light oil overflow buffer tank 3 are both greater than the pipe diameter of the oil-water mixture inlet 17 of the oil-water separation chamber 1.

[0023] When in use, the water level in the oil-water separation chamber 1 is ensured to be not lower than the initial water supplement lower limit 8. Since the first nitrogen inlet, the second nitrogen inlet and the third nitrogen inlet are communicated with the nitrogen pipeline 10 after being communicated with each other, the first VOC interface, the second VOC interface and the third VOC interface are communicated with the VOC pipeline 11 after being communicated with each other, and since the L-shaped pipeline 9 forms a U-shaped communicating vessel with the oil-water separation chamber 1, when the oil-water mixture is all water and the water level in the oil-water separation chamber 1 slowly reaches a height higher than the water overflow inlet of the water overflow buffer tank 2, the water starts to overflow. Since the pipe diameter of the water self-flow outlet of the water overflow buffer tank 2 is larger than the pipe diameter of the oil-water mixture inlet 17 of the oil-water separation chamber 1, the water in the water overflow buffer tank 2 is timely discharged and the water surface (oil-water interface) in the oil-water separation chamber 1 will not be higher than the height of the water overflow inlet of the water overflow buffer tank 2, that is, the water will not be discharged from the oil discharge port of the oil-water separation chamber 1. When the water accounts for a decreasing proportion in the oil-water mixture and starts to contain oil, since the water overflow buffer tank 2 is communicated with the top of the oil-water separation chamber 1, that is, the pressure is equal, the L-shaped pipeline and the oil-water separation chamber 1 together form a U-shaped communicating vessel, the water discharge port at the lower part of the oil-water separation chamber 1 is the liquid communication point of the U-shaped communicating vessel, and with the continuous addition of the oil-water mixture, the oil liquid accumulates more and more until the liquid level height reaches the height of the oil discharge port at the upper part of the oil-water separation chamber 1, and then the oil is discharged from the oil discharge port 7. When the water content in the oil-water mixture decreases, the overflow discharge amount of the water discharge port of the oil-water separation chamber 1 decreases. The water overflow buffer tank 2 is arranged between the water storage tank 4 and the L-shaped pipeline 9, so that the oil-water separation chamber 1, the L-shaped pipeline 9 and the water overflow buffer tank 2 form a communicating vessel. When the water in the water overflow buffer tank 2 is discharged to the water storage tank 4, the negative pressure generated will adsorb the nitrogen at the upper part of the water overflow buffer tank 2, that is, the siphon effect will not be generated to suck out the water in the L-shaped pipeline 9, so that the liquid in the oil-water separation chamber 1 will not be endlessly sucked into the water overflow buffer tank 2, and then the oil will not be sucked into the water storage tank 4. When the oil-water mixture is all oil, since the water overflow buffer tank 2 is communicated with the top of the oil-water separation chamber 1, that is, the pressure is equal, according to P = ρgh, ρoil < ρwater, so h 油 is greater than h 水 . With the continuous addition of the oil-water mixture, since the height of the L-shaped pipeline 9 is fixed and the height of the oil discharge port of the oil-water separation chamber 1 is fixed, when the oil-water separation chamber 1 continuously receives oil, the oil discharge port of the oil-water separator continuously overflows and discharges, and the oil-water separation interface in the oil-water separation chamber remains stable and unchanged. At this time, the oil-water separation interface is the height of the water discharge port at the lower part of the oil-water separation chamber 1 when it is designed, so the water will not flow out from the water discharge port 6 of the oil-water separation chamber 1, thereby ensuring the normal separation of oil and water.

[0024] In specific implementation, the nitrogen pipeline 10 is provided with a self-operated regulating valve 12, so that the upper parts of the oil-water separation chamber 1, the water overflow buffer tank 2 and the light oil overflow buffer tank 3 can maintain a stable pressure.

[0025] In the embodiment, the VOC pipeline 11 is provided with a single call valve 13, which on one hand needs to move the pressure condition to start, so that the oil-water separation chamber 1, the water overflow buffer tank 2 and the light oil overflow buffer tank 3 upper part maintain a certain pressure, on the other hand, the single call valve 13 makes the gas medium only flow in one direction, and no backflow phenomenon occurs.

[0026] In the embodiment, the VOC pipeline 11 is further provided with a fire damper 14 to prevent backfire.

[0027] In the embodiment, the self-flowing water pipeline is provided with a first drain valve 15 to prevent waste caused by nitrogen exhaust.

[0028] In the embodiment, the self-flowing oil pipeline is provided with a second drain valve 16 to prevent waste caused by nitrogen exhaust.

[0029] The above is only the specific embodiment of the present application, so that those skilled in the art can understand or implement the present application. Although the foregoing embodiments are described in detail, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments, and they should be covered in the protection scope of the claims.

Claims

1. A self-contained oil-water separation device, characterized by, The device comprises an oil-water separation chamber (1), a water overflow buffer tank (2), a light oil overflow buffer tank (3), a water storage tank (4), and a light oil storage tank (5). The top of the oil-water separation chamber (1) is provided with a first nitrogen inlet, a first VOC interface, the top of the water overflow buffer tank (2) is provided with a second nitrogen inlet, a second VOC interface, the top of the light oil overflow buffer tank (3) is provided with a third nitrogen inlet, a third VOC interface, the first nitrogen inlet, the second nitrogen inlet, and the third nitrogen inlet are communicated with each other and then communicated with a nitrogen pipeline (10), the first VOC interface, the second VOC interface, and the third VOC interface are communicated with each other and then communicated with a VOC pipeline (11), the lower part of the oil-water separation chamber (1) is provided with a water outlet (6), the upper part of the oil-water separation chamber (1) is provided with an oil outlet (7), the middle part of the oil-water separation chamber (1) is provided with an oil-water mixture inlet (17), the lower part of the water overflow buffer tank (2) is provided with a water overflow inlet and a water self-flow outlet, the oil-water separation chamber (1) is provided with an initial water replenishment lower limit (8) which is higher than the water outlet (6), the water overflow inlet of the water overflow buffer tank (2) is arranged higher than the initial water replenishment lower limit (8) of the oil-water separation chamber (1) and lower than the oil outlet (7), and when the light oil level in the oil-water mixture is higher than the water overflow inlet, the oil-water mixture overflows from the oil outlet (7), the water overflow inlet of the water overflow buffer tank (2) is communicated with the water outlet (6) of the oil-water separation chamber (1) through an L-shaped pipeline (9), the water amount in the initial water replenishment lower limit (8) is equal to the water amount for filling the L-shaped pipeline (9), the water self-flow outlet of the water overflow buffer tank (2) is communicated with the water storage tank (4) through a water self-flow outlet pipeline, the lower part of the light oil overflow buffer tank (3) is provided with an oil overflow inlet and an oil self-flow outlet, the oil overflow inlet of the light oil overflow buffer tank (3) is communicated with the oil outlet (7) of the oil-water separation chamber (1) through a horizontal pipeline, the oil self-flow outlet of the light oil overflow buffer tank (3) is communicated with the oil storage tank through an oil self-flow outlet pipeline, and the pipe diameter of the water self-flow outlet of the water overflow buffer tank (2) and the pipe diameter of the oil self-flow outlet of the light oil overflow buffer tank (3) are both greater than the pipe diameter of the oil-water mixture inlet (17) of the oil-water separation chamber (1).

2. The self-controlled oil-water separation device according to claim 1, wherein, A self-operated regulating valve (12) is arranged on the nitrogen pipeline (10).

3. The self-controlled oil-water separation device according to claim 2, wherein, A single call valve (13) is arranged on the VOC pipeline (11).

4. The self-controlled oil-water separation device according to claim 3, wherein, A flame arrester (14) is further arranged on the VOC pipeline (11).

5. The self-controlled oil-water separation device according to claim 4, wherein, A first drain trap valve (15) is arranged on the water self-flow outlet pipeline.

6. The self-controlled oil-water separation device according to claim 5, wherein, A second drain trap valve (16) is arranged on the oil self-flow outlet pipeline.

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